IS 1200-12: Method of Measurement of Building and Civil Engineering Works, Part XII: Plastering and Pointing

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IS 1200-12 (1976) : Method of Measurement of Building and
Civil Engineering Works, Part XII: Plastering and Pointing
[CED 44: Methods of Measurement of Works of Civil
Engineering]

Jawaharlal Nehru
'Step Out From the Old to the New'

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PROTECTED BY COPYRIGHT

IS : 1200 ( Part XII ) • 1976

( Reaffirmed 2002 )

Indian Standard

METHOD OF MEASUREMENT OF BUILDING
AND CIVIL ENGINEERING WORKS

PART XII PLASTERING AND POINTING

( Third Revision )

Fifth Reprint APRIL 1999

UDC 69*003-12 : 693'6+693'224

© Copyright 1976

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN. 9 BAHADUR SHAH ZAPAR MARG

NEW DELHI 110002

Gr 3 June 1976

IS 1 1200 ( Part XII) -1976

Indian Standard

METHOD OF MEASUREMENT OF BUILDING
AND CIVIL ENGINEERING WORKS

PART XII PLASTERING AND POINTING

( Third Revision)

Civil Works Measurement Sectional Committee, BDC 44

Chairman Representing

Shbi V . R. Vaish Central Public Works Department

Members
Shbi N. P. Acharyya The Commissioner for the Port of Calcutta, Calcutta

Shbi K. D. Abcot Engineers India Limited, New Delhi

Shbi T. V. Sitabam ( Alternate )
Shbi B. G. Baljekab Hindustan Steel Works Construction Ltd, Calcutta

Shbi J. Dubai Raj ( Alternate )
Shbi £. jL. Bbasin Institution of Surveyors, New Delhi

Chief Engineer ( R&B ) Public Works Department, Government of Andhra

Pradesh, Hyderabad
Superintending Engineer
( P&D ) ( Alternate )
Shri R. K. Choudhby Bhakra Management Board, Nangal Township

Shri I. P. Puri ( Alternate )
Shbi W. J. daGama Bomhay Port Trust, Bombay

Shbi V. B. Desai Hindustan Construction Go Ltd, Bombay

Dibectob, IRI Irrigation Department, Government of Uttar .Pradesh >

Roorkee
Dibectob ( Rates & Costs ) Central Water Commission, New Delhi

Deputy Director ( Rates
& Costs ) ( Alternate )
Executive Engineer ( Planning Ministry of Railways
& Designs ), Northern
Railway
Shri P. N. Gadi Institution of Engineers ( India ), Calcutta

Shri G. V. Hingobani Gammon India Ltd, Bombay

■Shri G. K. C. Iyengar Heavy Engineering Corporation Ltd, Ranchi

Shbi M. L. Jain The National Industrial Development Corporation

Ltd, New Delhi
Shbi S. L. Kathubia Ministry of Shipping & Transport ( Roads Wing )

Shri V. Sivagubu ( Alternate )

( Continued on page 2 )

© Copyright 1976

BUREAU OF INDIAN STANDARDS

This publication is protected under the Indian Copyright Act { XIV of 1957 ) and

reproduction in whole or in part by any means except with written permission of the

publisher shall be deemed to be an infringement of copyright under the said Act.

IS: 1200 (Part XII) -1976

( Continued from page 1 )

Members Representing

Shri H. K. Khosla Irrigation Department, Government of Haryana,

Chandigarh
Shri S. K. Kogekar National Buildings Organization, New Delhi

Assistant Director ( SR ) ( Alternate )
Shri V. D. Londhe Concrete Association of India, Bombay

Shri N. C. Duggal ( Alternate )
Shri K. K. Madhok Builders* Association of India, Bombay

Shri Datta S. Malik Indian Institute of Architects, Bombay

Prof M. K. Godbole ( Alternate )
Shri R. S. Murthy Engineer-in-Chief*s Branch, Ministry of Defence

Shri V. G. Patwardhan ( Alternate )
Shri C. B. Patel M. N. Dastur & Co Private Ltd, Calcutta

Shri B. C. Patel ( Alternate )
Shri K. G. Salvi Hindustan Housing Factory Ltd, New Delhi

Shri G. B. Singh ( Alternate )
Shri P. V. Sathe Public Works Department, Government of Maha-

rashtra, Bombay
Dr R. B. Singh Banaras Hindu University, Varanasi

Shri S. Srinivasan Hindustan Steel Ltd, Ranchi

Superintending Surveyor of Central Public Works Department, New Delhi
Works ( Aviation )

Surveyor of Works ( I )
Attached to SSW
( Aviation ) ( Alternate )
Superintending Surveyor of Central Public Works Department, New Delhi
Works ( I )

Surveyor of Works ( I )
Attached to SSW ( I ) ( Alternate )
Shri D. Ajitha Simha, Director General, BIS ( Ex-officio Member )

Director ( Civ Engg )

Secretary

Shri K. M. Mathur
Deputy Director ( Civ Engg ), BIS

IS 1 1200 ( Part XII ) - 1976

Indian Standard

METHOD OF MEASUREMENT OF BUILDING
AND CIVIL ENGINEERING WORKS

PART XI! PLASTERING AMD POINTING

( Third Revision)

0. FOREWORD

0.1 This Indian Standard (Part XII) (Third* Revision) was adopted
by the Indian Standards Institution on 14 May 1976, after the draft
finalized by the Civil Works Measurement Sectional Committee had
been approved by the Civil Engineering Division Council.

0.2 Measurement occupies a very important place in planning and
execution of any civil engineering work from the time of first
estimates to final completion and settlement of payments of the project.
The methods followed for measurement are not uniform and consider-
able differences exist between practices followed by one construction
agency and another and also between various Central and State
Government departments. While it is recognized that each system of
measurement has to be specifically related to the administrative and
financial organizations within the department responsible for work, a
unification of the various systems at technical level has been accepted
as very desirable, specially as it permits a wider circle of operation for
civil e/tgineering contractors and eliminates ambiguities and mis-
understandings arising out of inadequate understanding of various
systems followed.

0.3 Among the various civil engineering items, measurement of Imilding
had been first to be taken up for standardization and this standard,
having provisions relating to all building works, was first published is
1958 and revised in 1964,

0.4 In the course of usage of this standard ( IS : 1200-1964* ) by various
construction agencies in the country, several clarifications and suggestion
for modifications were received and as a result of study, the Sections*
Committee decided that its scope, besides being applicable to buildinga
shall be expanded so as to cover civil engineering works like industrial
and river valley project works.

♦Method of measurement of building works {revised ).

IS: 1200 (Part XII) -1976

0.5 Since various trades are not related to one another, the Committee
decided that each type of trade as given in IS: 1200-1964* be issued
separately as a different part which will be helpful to specific users in
various trades. This part covering method of measurement of plastering
and pointing applicable to building as well as civil engineering works
was, therefore, issued as a second revision in 1971.

0.6 In the course of use of this standard in the past five years based on
the suggestions received, certain amendments were issued to this
standard. This third revision also incorporates all those amendments.

0.7 For the purpose of deciding whether a particular requirement of
this standard is complied with, the final value, observed or calculated,
expressing the result of a measurement, shall be rounded off in
accordance with IS : 2-1960*f. The number of significant places retained
in the rounded off value should be the same as that of the specified
value in this standard.

1. SCOPE

1.1 This standard ( Part XII ) covers the method of measurement of
plastering and pointing for buildings and other civil engineering works.

2. GENERAL RULES

2*1 Clubbing of Items — Items may be clubbed together provided
detailed drawings or specifications or both are prepared for such items
and method of measurement is agreed to be on the basis stated in the
standard,

2.2 Booking of Dimensions — In booking of dimensions, the order
shall be consistent and generally in the sequence of length, breadth or
width and height or depth or thickness.

2.3 Description of Items — Description of each item shall, unless
■otherwise stated, be held to include, wherever necessary, conveyance;
-delivery; handling; unloading; storing; necessary scaffolding; protective
cover; cleaning stains from floors, walls, return of packings, etc; and
other incidentalchanges.

2.4 Dimensions — All work shall be measured net as executed in the
decimal system, as given below:

a) Dimensions shall be measured to the nearest 0*01 m, and

b) Areas shall be worked out to the nearest 0*01 m 2 .

♦Method of measurement of building works ( revised ).
•Rules for rounding off numerical values ( revised ).

IS: 1200 (Part XII) -1976

2.5 Bills of Quantities — Items of work shall fully describe materials
and workmanship and accurately represent the work to be executed.

2.6 Preparatory Work — Preparatory work, such as raking out joints,
scarifying and cleaning, shall be included in the description of item
unless otherwise specified.

3. PLASTERING

3.1 Plaster work shall be classified according to the material used and
each classification shall be measured separately. The following parti-
culars shall be given for each classification;

a) Mix of mortar;

b) Number of coats and thickness of each coat;

c) Nature of surface treatment,

d) Nature of base;

e) Curved work, conical work, spherical work and eliptical work
stating the radius; and

f ) Any special treatment of base.

3.1.1 Description shall include arrises, internal 4 rounded angles,
external chamfers and/or rounded angles not exceeding t50 mm in girth.

Note — For work exceeding 80 mm girth, see 3.4.

3.1.2 In case of fibrous plaster, particulars of methods of application
and of treatment of joints shall also be given.

3.1.3 Work in repairs shall be so described stating thickness of

dubbing, if any.

3.2 Plastering on roofs, ceilings and walls shall be measured separately.

3.3 Removing plaster by scraping or otherwise shall be measured
separately in square metres.

3.4 Plastering in isolated widths or in widths not forming part of general
plastering work ( as in bands, cornices, sunk, panels, etc ) and in
chamfers, rounded angles exceeding 80 mm in girth shall be measured as
below:

a) 30 cm or below in width/girth, in running metres; and

b) Width/girth above 30 cm in square metres.

3.5 Plastering at a height greater than 10 m above ground/datum level
shall be measured separately in stages of 5-m height except interior
plastering in case of building which shall be measured separately for
each storey.

IS»1200(PartXH)-1976

3.6 All plastering shall be measured in square metres unless otherwise
described.

3.7 Cutting to edges shall De measured separately in running metres or
alternatively described and included in the item.

3.8 Deductions

3.8.1 For jambs, soffits, sills, etc; for openings not exceeding 0*5 m a
each in area, for ends of joists, beams, posts, girders, steps, etc, not
exceeding 0*5 m* each in area, and for openings exceeding 0*5 m 2 and
not exceeding 3 m 2 in each area, deductions and additions shall be made
in the following manner:

a) No deduction shall be made for ends of joists, beams, posts t etc,
and openings not exceeding 0*5 m* each and no addition shall
be made for reveals, jambs, soffits, sills, etc, of these openings
nor for finish to plaster around ends of joists, beams, posts, etc.

b) Deductions for openings exceeding 0*5 m 2 but not exceeding 3 m a
each shall be made as follows and no addition shall be made for
reveals, jambs, soffits, sills, etc, of these openings:

1) When both faces of wall are plastered with same plaster,
deduction shall be made for one face only.

2) When two faces of wall are plastered with different types of
plaster or if one face is plastered and the other pointed,
deduction shall be made from the plaster or pointing on the
side on which width of reveals is less than that on the other
side but no deduction shall be made on the other side. Where
widths of reveals on both faces of wall are equal, deduction
of 50 percent of area of opening on each face shall be made
from areas of plaster and/or pointing as the case may be.

3) When only one face is plastered and the other face is
not, full deduction shall be made from plaster if width of
reveal on plastered side is less than that on unplastered
side but if widths of reveal on both sides are equal or
width of reveal on plastered side is more, no deduction shall
be made.

4) When width of door frame is equal to thickness of wall or
is projecting beyond thickness of wall, full deduction for
opening shall be made from each plastered face of the wall.

3.8.2 In case of openings of area above 3 m* each, deduction shall
be made for opening on each face but jambs, soffits and sills shall be
measured.

Note — In calculating areas of openings, the extra width of rebated reveals, if
any, shall be excluded.

6

IS: 1200 (Part XII) -H7S

3.9 Ceilings shall be measured between walls or partitions and dimensions
before plastering shall be taken. Width covered by cornices or coves,
if any, shall be deducted.

3*10 Soffits of stairs shall be measured as plastering on ceilings.
Flewing soffits shall be measured separately.

3.11 Ribs and mouldings on ceilings shall be measured as for cornices
{see 3.4), deduction being made from plastering if width/girth exceeds
15 cm.

3.12 Measurement of wall plastering shall be taken between walls or
partitions (dimensions before plastering being taken) for length and
from top of floor or skirting to ceiling for height. Depth of cornices or
coves, if any, shall be deducted.

3*12*1 Sides of pilasters, projections, etc, shall be added to plaster on
walls.

3.12.2 Mouldings, architraves, ceiling ribs, cornices and the like
on pilasters and around openings, etc, shall be measured separately as
in 3.4.

3.13 Length shall be measured in running metres at the centre of girth.
Girth shall be measured along curve of moulding.

3.14 Moulded cornices and coves shall be measured in square metres, the
area being arrived at by multiplying length by girth.

3.15 Forming letters or figures in plaster shall be enumerated stating the
height.

3.16 Plastering on lathing shall be measured separately stating the
number of coats and thickness of each coat.

3.16.1 Lathing shall be fully described and measured net; wood and
steel lathing shall be measured separately [see IS : 1200 (Part XXI )-L973*
and IS: 1200 (Part VIII)-1974t] respectively.

3.16*2 Laps, gauge and mesh of steel lathing shall be stated, no
allowance being made for laps or cutting.

3.16.3 Size of laths, their distance apart and the kind of timber shall
be stated in the case of wood lathing.

3.16.4 Connector lathing shall be measured separately.

♦Method of measurement of building and civil engineering works: Part XXI
Woodwork and joinery ( second revision ).

tMethod of measurement of building arid civil engineering works: Part VIII Steel
and iron work ( third revision ).

IS: 1200 (Part XII) -1976

3.17 Plastering on honeycomb work shall be described and measured in
square metres ^>n the basis of overall superficial area without deducting
openings.

4. POINTING

4.1 Proportions of materials shall be described. Various. types of pointing
shall be measured separately. Pointing on different types of walls,
floors, roofs, etc, shall be measured separately. Type and material of
surface to be pointed shall be described.

4.2 Pointing in single detached joints as for flashings shall be measured
in running metres.

4.3 Pointing brick and tile work with mortars of matching shades shall
be measured separately.

4.4 Pointing shall be measured in square metres.

4*5 Removing pointing by raking or otherwise shall be measured in
square metres.

4*6 Deductions

4.6.1 For jambs, soffits, sills, etc, for openings not exceeding 0*5 m 2
each in area; for ends of joists, beams, posts, girders, steps, etc, not
exceeding 0*5 rn 2 each in area; and for openings exceeding S 5 m 8 and
not exceeding 3 m 2 each, deductions and additions shall be made in the
following manner:

a) No deduction shall be made for ends of joists, beams, posts, etc»
and openings not exceeding 0*5 m* each, and no addition shall
be made for reveals, jambs, soffits, sills, etc, of these openings
nor for finish around ends of joists, beams, posts, etc.

b) Deductions for openings exceeding 0*5 m a but not exceeding
3 m 2 each shall be made as follows and no addition shall be
made for reveals, jambs, soffits, sills, etc, of these openings:

1) When both faces of wall are pointed with the same type of
pointing, deduction shall be made for one face only.

2) When two faces of wall are pointed with different types of
pointing or if one face is. plastered and the other pointed,
deduction shall be made in the plaster or pointing on the side
on which the width of reveals is less than that on the other
side, but no deduction shall be made from plaster or pointing
on the other side. Where widths of reveals on both faces of
wall are equal, deduction of 50 percent of area of opening
on each face shall be made frqjn areas of plastering and/or
pointing as the case may be.

8

IS t 1200 ( Par* XII ) - 1976

3) When width of door frame is equal to thickness of 'wall or is
projecting beyond thickness of wall, full deduction for
opening shall be made from each pointed face of the wall.

4) When only one face is pointed and the other face is not
pointed, full deduction shall be made from pointing if width
of reveal on the pointed side is less than that on unpointed
side, but if widths of the reveals on both sides are equal or
width of reveal on pointed side is more, no deduction shall
be made nor any addition shall be made for reveals, jambs,
soffits, sills, etc.

4.6.2 In case of openings of area above 3 m 2 each, deduction shall be
nade for opening on each face but jambs, soffits and sills shall be
measured •

Not?: — In calculating areas of openings, extra width of rebated reveal, if any,
shall be excluded.

4*7 Raking-out joints shall be measured in square metres or
alternatively included in description of item.

4.7.1 Raking-out single detached joint shall be measured separately
ki running metres.

4.8 Pointing on honey-comb work shall be described and measured in
square metres on the basis of overall superficial area without deducting
openings.